I have a Gentoo VM on which I don't have any consoles on. I can watch the system boot up, but then I never get a prompt to log in. I know I need to launch /sbin/getty on c1 but do I need to do anything else?

# What to do at the "Three Finger Salute".
ca:12345:ctrlaltdel:/sbin/shutdown -r now

### Used by /etc/init.d/xdm to control DM startup.
### Read the comments in /etc/init.d/xdm for more
# info. Do NOT remove, as this will start nothing
# extra at boot if /etc/init.d/xdm is not added
# to the "default" runlevel.
x:a:once:/etc/X11/startDM.sh

Your init, perhaps? You can have all the things you want in /etc/inittab to no effect if your init doesn't care for it._________________⇨ PDF for documents is misused. Use HTML!
¶ Math markup for HTML5¶ GCPM for Footnotes

Your init, perhaps? You can have all the things you want in /etc/inittab to no effect if your init doesn't care for it.

I don't quite understand what you mean by my init. Can you explain?

Among others, there are OpenRC and systemd. OpenRC is the default on Gentoo and uses /etc/inittab to bring up the consoles (perhaps this can be configured, I don't know). systemd does not care about inittab and instead uses its service definitions to determine what to bring up on start. If you don't know about these things, it's likely that you're using OpenRC in which case I don't know what's the problem. I'd try what 666 told you_________________⇨ PDF for documents is misused. Use HTML!
¶ Math markup for HTML5¶ GCPM for Footnotes